Why Is My Req.body Always Empty On Post?

There are many questions that are the same, with answers, but most answers I have found revolve around the use of body-parser, which I am using. I have written many basic APIs and

Solution 1:

If you set your

xmlhttp.setRequestHeader("Content-type", "application/json"); 

then you need to use

JSON.stringify(...your object ...) 

as @JaromandaX said. if you set your

xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

then you need to serialize your object by object.serialize();.